Spreader for sham roll-bolsters.



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J. DAVID. SPREADER FORSHAM ROLL BOLSTERS.

(Applicatinn led Oct. 19, 1901.)

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Nr'rn Smarts atterrir .errent JOSEPH DAVID, OF ST. LOUIS, MISSOURI.

SPREADER FOR SHI-HVB ROLLNBOLSTIERS.

SPEGIFIGATION forming part of Letters Patent No. 691,119, dated January 14, 1902. Application tiled October 19, 1901. Serial No. 79,260. (No model T0 all 'L1/72,0772, t may concern:

Be it known that I, JOSEPH DAVID, a citizen of the United States, residing in the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Spreaders for Sham Roll-Bolsters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming .part of this specification.

My invention relates to a spreader for sham roll-bolsters, whereby a bolster composed of cheap material is maintained in cylindrical condition and held from collapse while in use.

Myinvention consists in features of novelty hereinafter fully described, and pointed out in the claims. e

Figure I is a perspective View of a rollbolster equipped with my improved spreader. Fig. II is a perspective view of one of the spreaders. Fig. III is an enlarged cross-sectional View taken on line III III, Fig. I. Fig. 1V is an enlarged longitudinal sectional View taken through one end of the bolster and one of the spreaders therein. Fig. V is a sectional view of a modification of the spreader.

The bolster to which my spreaders are applied is preferably composed of a cylindrical body 1, that may be of strawboard or any other suitable material and is incased by a cloth covering 2. 'lhe spreaders, of which there are preferably a central one and two end ones, are composed of a pair of sections joined by a hinge 3 at their rear ends and held separated at their forward ends by an expansion-spring 4. Each of the spreadersections is composed of a board 5, having attached thereto a pair of semicircular side pieces 6, that are secured to a separating and sustaining board 7, placed between said side pieces. The side pieces being of seinicircular shape, semicircular openings are provided, through which the iingers of a persons hand may be introduced to grasp the boards 5 and carry them toward each other against the action of the spring 4, thereby contracting the spreaders into smaller dimensions, so that they may be introduced into the bolster. After the spreaders have been placed in a bolster and freed from restraint the spring 4 by expansion forces the boards 5 apart into the position seen in Figs. II and III, thereby causing the spreaders to entirely fill the space occupied thereby within the bolster and hold the bolster from collapse while in use. The spreaders used at the ends of the bolster are preferably loosely incased in a covering 8, (see Figs. I and IV,) that produce a finished effect in the ends of the bolster.

In Fig. V, I have shown a modiiication wherein the boards 5 are held separated by a pair of expansible springs 4f placed between them, the hinge in this construction being dispensed with, inasmuch as its presence is not required where an even pressure is exerted against the two ends of the spreadersections, as is the case in the employment of the pair of springs shown.

I claim as my inventionl. The combination with a roll-bolster, of a spreader comprising a pair of sections each consisting of a board and semicircular side pieces fixed to said board and a springinterposed between said sections, substantially as and for the purpose set forth.

2. The combination with a roll-bolster, of a spreader comprising a pair of sections, each consisting of aboard, semicircular side pieces, a separating-board located between said side pieces, and a spring positioned between said boards and adapted to hold said sections in a spread condition, substantially as speciiied.

3. The combination with a roll-bolster, of a pair of spreader-sections, each consisting of a board, side pieces attached to said board, a separating-board located between said side pieces; the hinge whereby said first-named boards are united, and a spring interposed between said boards, substantially as and for the purpose set forth.

I JOSEPH DAVID. In presence of E. S. KNIGHT, M. P. SMITH. 

